Question

Найдите число молекул в 6 г водорода, пожалуйста помогите

Answer 1

число молекул определяется по формуле:

N = N A* n

где

N  число молекл 

NA - число Авогадро -постоянная величина   6,02*10⁻²³    1/моль 

n - количество вещества 

для начала надо выяснить сколько у нас n

n=m/M  n(H2) =6г/2г/моль=3 моль

теперь подставляем в формулу и вычисляем 

 

N= 6,02*10⁻²³    1/моль   *  3 моль  = 18.06*10⁻²³ или 1,8*10⁻²²    молекул

Answer 2

Calculating the Number of Molecules in 6g of Hydrogen

To calculate the number of molecules in 6 grams of hydrogen, we can use the following steps:

1. Calculate the number of moles of hydrogen using the formula: moles = mass / molar mass

2. Once we have the number of moles, we can use Avogadro's number to find the number of molecules: number of molecules = moles * Avogadro's number

Let's proceed with the calculations.

Step 1: Calculate the Number of Moles of Hydrogen

The molar mass of hydrogen (H2) is approximately 2 grams per mole.

Using the formula: moles = mass / molar mass

We can calculate the number of moles of hydrogen in 6 grams: moles = 6g / 2g/mol = 3 moles

Step 2: Calculate the Number of Molecules

Now, using Avogadro's number, which is approximately 6.022 x 10^23 molecules per mole we can find the number of molecules in 3 moles of hydrogen: number of molecules = 3 moles * 6.022 x 10^23 molecules/mole = 18.066 x 10^23 molecules

So, there are approximately 18.066 x 10^23 molecules in 6 grams of hydrogen.

I hope this helps! If you have any further questions, feel free to ask.